Tamping device for block molding machines



Filed Feb. 14, 1947 Dec; 14, 1948. F. c. GEORGE 2,456,1g1

TAMPING DEVICE FOR BLOCK MOLDING MACHINES 2 sheets-sheet 1 INVENTOR. FRANK CLGEORGE Dec. 141-, 1948. F, c, GEORGE TAMPING DEVICE FOR BLOCK MOLDING MACHINES 2 Sheets-Sheet 2 Filed Feb 14, 1947 S Y am INVENTOR. FRANK C-GEORGE B firm Patented Dec. 14, 1948 1:;-

. TAMPING DEVICE FOR nLooK MOLDING MACHINES Frank 0. George, Orlando, Fla., assignor, by..

mes'ne-assignments, to FuCJGcorge Machine Company, Orlando, ;Fla.,.

Florida.

a corporation of Application'February 14, 1947, Serial No. 728,405

This invention relates to a hand operable tamping device in combination with a service hopper as used with a machine for molding building blocks from plastic materials such as concrete and the like, and has for its general object to provide a simple practical means for settling and compacting of the plasticin the mold box.

Broadly it is an object of this invention to provide a hand operable tamping device for plastic block machines of the type having a service hopper; which is transferable to and from a position underlying a conventional source of material supply for reception of plastic material therefrom and a position overlying the core box for discharge of material thereto; and having a pair of vertical guides arranged parallel with each other, fixedly engaged at their respective base to the flanged base of the service hopper, for

lateral shifting therewith and at a sufiicient distance apart to enable a tamping foot having suitable runner members to be slidably mounted between them, and leverage means pivoted to the service hopper and operable to actuate the tamping foot to and from the core box.

This invention resides substantially in the combination, construction and arrangement of parts, all in accordance with the disclosure herein.

In the accompanying drawings,

Figure 1 is a plan view of a portion of a block molding machine, the service hopper with which this invention is embodied, being shown in overlying position to the mold box.

Figure 2 is an end elevation thereof.

Figure 3 is a sectional view thereof, substantially on the line 3-3 Figure 1.

Figure 4 is a sectional elevation thereof, and illustrates the effectual operation of the invention.

The true nature and manner of use of a device in accordance with this invention will be best understood by a detailed description of the form thereof shown in the drawings in an illustrative sense.

Now referring more particularly to the drawings A indicates the bed of a conventional building block molding machine and B a service hopper in longitudinal shiftable engagement therewith for travel to and from an underlying position of a conventional source of material supply having means for deposit of material to the hopper, and an overlying position to the core box or mold.

The service hopper comprises a body having side and end walls 2 and 3, respectively, having outwardly extended base flanged portions 4, the

5 Claims. (01. 25-41) outer edges of the end flanges right angle lips 5 forming runners upon the abut edges of the machine bed as at 6 for guidance of the-service hopper during longitudinal movementgthereof, and an open top and bottom; the machine-bed top forming abottom enclosure thereof-during transfer of the service hopper to and from the material supply source and the mold box.

The tamping mechanism of this invention comprises a grid forming the tamping foot 9; which may be single or in series depending on the block molding capacity of the machine and the number and arrangement of the cores involved in the molding of the block; having suitable parallel bars and cross bars to accomplish a function of this invention which is to provide a foot whereby the material area of the mold is subject to the tamping foot at each tamping operation.

Vertical travel for the tamping foot is directed thru vertical guides or tracks 10 arranged parallel as to each other, fixedly engaged at their respective base to the flanged base of the service hopper as at II, for lateral shifting thereof, and spaced to permit the tamping foot thru runner brackets l2, formed therewith, to be slidably mounted therebetween.

Actuating means for vertical movement of the tamping member upon the guides it) includes hand levers l4 located outside opposite ends of the service hopper and having pivotal contact therewith as at I5, extended therefrom to the front of the machine and having a connecting handle member l6, and alternate movement thru the dual fulcrum of the lever yoke ll upon rollers l8; which rotate upon stub shafts l9 engaged with the bracket runner l2.

When the tamping mechanism is not in use the service hopper is slid to the rear of the machine and rearwardly extended portion 20 of the levers is latched in inactive position with member 2| by engagement therewith under the lip 22 thereof.

From the above description it will be apparent to those skilled in the art that the details of construction illustrated herein may readily be varied without departure from the novel subject matter herein disclosed. I do not, therefore, desire to be limited by the disclosure but rather by the claims granted me.

What I seek to secure by United States Letters Patent is:

1. A tamping device of the type described comprising a service hopper for a block molding machine having a bed, and spaced upstanding guides based upon said hopper, and arranged parallel with each other, and shiftable with the hopper on said bed and a tamping foot having runners formed therewith and slidably mounted on said guides to lead the foot to and from Working relation to a mold,

2. A tampingidevicevof the ieharacterrdescribed and camedi by azaservlce hopper tfonjblock :molding machines having a bed, upstanding parallel guides mounted on opposite ends of the hopper for lateral shifting thereof, and a tamping foot moveably connected with the-guidesfor'traversing same to vertically guide the foot to and from working relation to a mold; v

3. A tamping device of thekkinwidescri-bedcomprising a hopper for a block mblding machine,r

upstanding guides mounted on opposite ends of the hopper for lateral shiftingtherewithmtamplng foot having runners movably connected with the guides for causing the tamping foot -to traverse the exposed area of the hopper to efiect wtumpmxmf zthetmaterial ima :mbldg. andzan; actu- -atmgdevereyokedltmtheirunner brackets :Eormovringmthesio'otitto; hringzsamezintowworking relation .rito' them'ibld. Y

a4aiAztampin-gidevicezrfor aiplastic block machine xhawingz-iaasettlingzand; compacting: IblOCk imold, comprising-sea dropper shaving-1 upstanding; guides,

qgzhraeket to;

10 mold, comprising a hopper having upstanding 'i;l;guides sliiftable= with the hopper, a tamping foot for the mold, a runner bracket on the foot and crmoyablymconnectingr the foot laterally to the tzauidfismm actuatmg lever yoked to the runner g 'nga lthe foot into workin relation to the moldraand means for latching the lever in inactive-position when the device is retired.

" FRANK C. GEORGE.

REFERENCES CITED fiTheevtwmingmeferencesraremfixrecordzrlnfithe "idiletuof :thisiepatent "UNITEDTSTK'I'ES'PAIENTS 1 Name i' Date :23Q31931 :T SieberM. r, l ::=Nov.ifl,; 11'905 1,2073599 JEDBz-Yidziflll. ;l3.ec;..5,.l916 

